PerfectDisk 2000 V5.0 redefines enterprise disk defragmentation for the Windows® 2000 and Windows XP operating systems. PerfectDisk 2000 V5.0 defragments drives faster than Diskeeper® V7. PerfectDisk V5.0 is specially designed to perform on disk drives and RAID sets of 100 gigabytes to a terabyte or more. Read More... For more info check Raxco.com.